Power & control transformer offers transformers, manufactured in accordance with indian standard specifications no. 2026, are considered by all users as one of the best manufactured in the country. The company follows stringent practices in selecting raw materials, rigid quality control in various stages of production and cleanliness with which all raw materials and production are handled to ensure the best quality and very reliable product. The transformer tanks are made from mild steel plates/steels of adequate thickness and are of welded construction. To provide ample cooling surface, the radiators/tubes wherever necessary, are welded to the tanks and the entire tank unit is tested under pressure to ensure no leakage of oil in service. The tank and frame parts are specially painted with oil resistance paint for guaranteed durability of ms parts. The cores are build from non-ageing scale free, low loss silicon steel laminations of cold rolled grain oriented best grade material. The laminations are insulated from each other by hot oil resisting insulation coating, which does not deteriorate with age and under continuous operation in oil at temperatures normally experienced in transformer service. The cores are of interleaved construction and are securely clamped or bound togethers to ensure mechanical rigidity. The normal working flux density are always maintained at 1.55 to 1.65 tesla for stable working of the unit in adverse condition of higher voltage and lower frequency. The windings are manufactured from electrolytic high conductivity copper/aluminium conductors covering with suitable insulation and normally consist of one or a combination of the tree main types of coils, viz., spiral coils, cross over coils, continuous disc coils.
